This paper presents a structurally simple, scripturally grounded account of the Trinity using the functional pattern that appears consistently across the biblical text: the Father as Creator, the Son as the Expression of God’s nature, and the Spirit as the Revealer who makes that expression intelligible and transformative. Rather than relying on metaphysical speculation or later doctrinal formulations, the paper traces how these three roles emerge directly from Scripture and form an irreducible triad. The argument shows why the three must be one—because creation, revelation, and redemption require unified divine action—and why the one must be three—because the roles of generating, expressing, and revealing cannot be collapsed without contradiction. The result is a clear, non‑paradoxical account of the Trinity aligned with the relational structure of reality.